Filtering device for producing lubricating oil for vehicles
The design of the limiting mechanism enables the synchronous disassembly of the filter element and the sealing cover in the lubricating oil filtration device, solving the complex filter element replacement problem in the existing technology and improving work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI KAISHENG MACHINERY PRODUCTS CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-24
AI Technical Summary
Existing lubricating oil filters require complex operations to simultaneously remove the sealing cap and filter element during filter element replacement after prolonged use, which affects work efficiency.
A limiting mechanism was designed, including a transmission unit and a limiting unit. By pressing the rod to drive the transmission block and the docking sleeve, the synchronous rotation of the sealing cover and the filter element is realized, which simplifies the process of connecting and disconnecting the filter element from the tank.
It enables simultaneous disassembly of the filter element and sealing cap, improving replacement efficiency, simplifying the operation process, and increasing work efficiency.
Smart Images

Figure CN224541179U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lubricating oil filtration, specifically a filtration device for automotive lubricating oil production. Background Technology
[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. Its main functions include lubrication, auxiliary cooling, rust prevention, cleaning, sealing, and buffering.
[0003] In the production of lubricating oil, crude lubricating oil and additives need to be mixed and stirred, and then the lubricating oil is filtered again to obtain lubricating oil without impurities. After long-term use, the filter element of existing lubricating oil filters needs to be replaced and cleaned to ensure filtration efficiency. The top of the existing filter element is generally fixed with a sealing cap to ensure the filter's airtightness. The filter element needs to be removed after the sealing cap is removed. Based on this, in order to simplify this operation and achieve simultaneous disassembly of the sealing cap and the filter element, this utility model proposes a filtration device for automotive lubricating oil production. Utility Model Content
[0004] The purpose of this utility model is to provide a filtration device for the production of automotive lubricating oil in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a filtration device for producing automotive lubricating oil, comprising a tank, one end of the tank being connected to a liquid pump via a pipe, one end of the liquid pump being connected to a raw material tank via a pipe, a sealing cap being threaded onto the top of the tank, a filter element being installed inside the tank, a receiving box being connected to one side of the outer wall of the tank via a pipe, and a limiting mechanism being provided on the sealing cap and the tank. The limiting mechanism includes a transmission unit and a limiting unit; The transmission unit is used to synchronously drive the sealing cover and filter element to rotate; The limiting unit is used to provide a limit for the connection between the sealing cap and the tank.
[0006] As a further embodiment of this utility model: the transmission unit includes a pressing rod, a transmission block, and a docking sleeve; The pressing rod is vertically slidably installed on the inner wall of the sealing cover and extends to the outside of the sealing cover. The pressing rod is used to synchronously drive the lower pressure plate and the transmission block to move. The transmission block is fixed to the outer wall of the pressing rod and extends to the inner side of the docking sleeve. The transmission block is used to transmit the rotational force from the pressing rod to the docking sleeve. The docking sleeve is fixed to the inside of the filter element, and the docking sleeve is used to provide space for the vertical movement of the pressing rod.
[0007] As a further embodiment of this utility model: the limiting unit includes a pressure plate, a pressure block, a limiting block, a guide groove, and an elastic block; The lower pressure plate is fixed to the outer wall of the pressing rod, and the lower pressure plate is used to synchronously drive the lower pressure block to move vertically; The lower pressure block is fixed to the bottom of the lower pressure plate, and the lower pressure block is used to provide axial movement thrust to the limiting block; The limiting block is axially slidably installed on the inner wall of the sealing cover and extends into the interior of the tank. The limiting block is used to limit the rotation of the tank and the sealing cover. The guide groove is formed on the inner side of the limiting block, and the guide groove is used to provide space for the docking of the pressing block; The two ends of the elastic block are respectively engaged with the inner wall of the sealing cover and the outer wall of the limiting block. The elastic block is used to always apply a squeezing force to the limiting block in one direction.
[0008] As a further improvement of this utility model, the number of the limiting blocks is set to multiple, and the multiple limiting blocks are distributed in a ring inside the sealing cover.
[0009] As a further improvement of this utility model: the inner wall of the limiting block is provided with a hole or groove for the insertion of the pressing block, and the guide groove is provided on both sides of the hole or groove.
[0010] As a further embodiment of this utility model: the outer wall of the pressing block is formed with a cylindrical protrusion that matches the inner side of the guide groove, and the outer wall of the guide groove is generally inclined.
[0011] As a further embodiment of this utility model: the bottom of the tank is formed with a threaded groove that connects to the threaded protrusion at the bottom of the filter element, and the inner wall of the docking sleeve is formed with a sliding groove for the vertical movement of the transmission block.
[0012] Compared with the prior art, the beneficial effects of this utility model are: By setting a limiting mechanism, when the filter element needs to be replaced, the connection limit between the sealing cap and the tank can be quickly released by applying pressure to the pressing rod. At the same time, the rotation limit of the pressing rod can be released. Then, the pressing rod can be rotated, and the filter element can be rotated synchronously through the transmission block, thus releasing the connection limit between the filter element and the tank. This achieves the purpose of simultaneously releasing the connection between the filter element, the sealing cap, and the tank, making it easier to remove the filter element at the same time as removing the sealing cap, further improving work efficiency. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the internal structure of the tank body of this utility model; Figure 3This is a partial enlarged view of point A of this utility model.
[0014] In the diagram: 1. Tank body; 2. Liquid pump; 3. Raw material box; 4. Sealing cover; 5. Filter element; 6. Limiting mechanism; 601. Pressing rod; 602. Transmission block; 603. Connecting sleeve; 604. Lower pressure plate; 605. Lower pressure block; 606. Limiting block; 607. Guide groove; 608. Elastic block; 7. Receiving box. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figures 1-3 In this embodiment of the present invention, a filtration device for producing automotive lubricating oil includes a tank 1, one end of the tank 1 is connected to a liquid pump 2 via a pipe, one end of the liquid pump 2 is connected to a raw material tank 3 via a pipe, a sealing cap 4 is threadedly connected to the top of the tank 1, a filter element 5 is installed inside the tank 1, a receiving box 7 is connected to one side of the outer wall of the tank 1 via a pipe, and a limiting mechanism 6 is provided on the sealing cap 4 and the tank 1. The limiting mechanism 6 includes a transmission unit and a limiting unit; The transmission unit is used to synchronously drive the sealing cover 4 and the filter element 5 to rotate; The limiting unit is used to provide a limit for the connection between the sealing cap 4 and the tank body 1; The transmission unit includes a pressing rod 601, a transmission block 602, and a docking sleeve 603; The pressing rod 601 is vertically slidably installed on the inner wall of the sealing cover 4 and extends to the outside of the sealing cover 4. The pressing rod 601 is used to synchronously drive the lower pressing plate 604 and the transmission block 602 to move. The transmission block 602 is fixed to the outer wall of the pressing rod 601 and extends to the inner side of the docking sleeve 603. The transmission block 602 is used to transmit the rotational force from the pressing rod 601 to the docking sleeve 603. The docking sleeve 603 is fixed to the inside of the filter element 5, and the docking sleeve 603 is used to provide space for the vertical movement of the pressing rod 601; The limiting unit includes a pressure plate 604, a pressure block 605, a limiting block 606, a guide groove 607, and an elastic block 608; The lower pressure plate 604 is fixed to the outer wall of the pressing rod 601, and the lower pressure plate 604 is used to synchronously drive the lower pressure block 605 to move vertically; The lower pressure block 605 is fixed to the bottom of the lower pressure plate 604, and the lower pressure block 605 is used to provide axial movement thrust to the limit block 606; The limiting block 606 is axially slidably installed on the inner wall of the sealing cover 4 and extends into the interior of the tank body 1. The limiting block 606 is used to limit the rotation of the tank body 1 and the sealing cover 4. The guide groove 607 is formed on the inner side of the limiting block 606, and the guide groove 607 is used to provide space for the docking of the pressing block 605; The two ends of the elastic block 608 are respectively engaged with the inner wall of the sealing cover 4 and the outer wall of the limiting block 606. The elastic block 608 is used to always apply a squeezing force to the limiting block 606 in one direction.
[0017] In this embodiment: by starting the liquid pump 2, the raw material in the raw material tank 3 is pumped into the tank 1 through the pipeline. The raw material enters the inner side of the filter element 5 installed in the tank 1 through the bottom hole groove of the tank 1. Under external pressure, the raw material moves outward through the filter element 5, so that the raw material enters the space between the filter element 5 and the tank 1. After that, the filtered raw material will enter the receiving box 7 through the pipeline connected to the tank 1, thus completing the filtration of the raw material. When filter element 5 needs to be replaced, pressure can be applied manually to the pressing rod 601. The pressing rod 601 will synchronously drive the transmission block 602 to move vertically along the internal groove of the docking sleeve 603. At the same time, the lower pressure plate 604 fixed on the outer wall of the pressing rod 601 will also move vertically synchronously. The lower pressure plate 604 will synchronously drive the lower pressure block 605 at the bottom to move downwards, so that the lower pressure block 605 aligns with the groove inside the limiting block 606. The cylindrical protrusion on the outer wall of the lower pressure block 605 will also align with the top end of the guide groove 607 in the groove of the limiting block 606, and the cylindrical protrusion on the outer wall of the lower pressure block 605 will be squeezed by the guide groove 607. The guide groove 607, in its tilted state, is subjected to downward pressure from the lower pressure block 605 and moves axially, causing the limiting block 606 to move out of the tank body 1. At this time, the pressing rod 601 can be rotated. The rotating pressing rod 601 will synchronously drive the transmission block 602 to rotate, and the rotational force will be transmitted to the docking sleeve 603 through the transmission block 602. At this time, the sealing cover 4 and the filter element 5 will rotate synchronously under the rotation of the pressing rod 601, thereby simultaneously releasing the threaded connection between the filter element 5, the sealing cover 4 and the tank body 1. At this time, the sealing cover 4 and the filter element 5 can be removed without repeatedly releasing the connection limit of the sealing cover 4 and the filter element 5, which further improves the working efficiency.
[0018] Please refer to this carefully. Figures 1-3Multiple limit blocks 606 are provided, and the multiple limit blocks 606 are distributed in a ring inside the sealing cover 4. The inner wall of the limit block 606 is provided with a hole or groove for the insertion of the pressure block 605. The guide groove 607 is provided on both sides of the hole or groove. The outer wall of the pressure block 605 is formed with a cylindrical protrusion that matches the inner side of the guide groove 607. The outer wall of the guide groove 607 is inclined. The bottom of the tank body 1 is formed with a threaded groove that connects with the threaded protrusion at the bottom of the filter element 5. The inner wall of the docking sleeve 603 is formed with a sliding groove for the vertical movement of the transmission block 602.
[0019] In this embodiment: this structure can limit the connection of the sealing cover 4 under the action of the limiting block 606, so that the sealing cover 4 will not rotate under pressure and external force, thus providing a limit for the rotation of the sealing cover 4; After the sealing cover 4 and filter element 5 are separated from the tank body 1 by the sliding groove set inside the docking sleeve 603, the transmission block 602 and pressing rod 601 will also move out synchronously along the internal sliding groove of the docking sleeve 603 during the process of the sealing cover 4 leaving the tank body 1.
[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A filtration device for producing automotive lubricating oil, comprising a tank (1), one end of the tank (1) being connected to a liquid pump (2) via a pipe, one end of the liquid pump (2) being connected to a raw material tank (3) via a pipe, a sealing cap (4) being threadedly connected to the top of the tank (1), a filter element (5) being installed inside the tank (1), and a receiving box (7) being connected to one side of the outer wall of the tank (1) via a pipe, characterized in that, Limiting mechanisms (6) are installed on the sealing cap (4) and the tank body (1); The limiting mechanism (6) includes a transmission unit and a limiting unit; The transmission unit is used to synchronously drive the sealing cover (4) and the filter element (5) to rotate; The limiting unit is used to provide a limit for the connection between the sealing cap (4) and the tank body (1).
2. The filtration device for producing automotive lubricating oil according to claim 1, characterized in that, The transmission unit includes a pressing rod (601), a transmission block (602), and a docking sleeve (603). The pressing rod (601) is vertically slidably installed on the inner wall of the sealing cover (4) and extends to the outside of the sealing cover (4). The pressing rod (601) is used to synchronously drive the lower pressure plate (604) and the transmission block (602) to move. The transmission block (602) is fixed to the outer wall of the pressing rod (601) and extends to the inner side of the docking sleeve (603). The transmission block (602) is used to transmit the rotational force from the pressing rod (601) to the docking sleeve (603). The docking sleeve (603) is fixed to the inside of the filter element (5), and the docking sleeve (603) is used to provide space for the vertical movement of the pressing rod (601).
3. The filtration device for producing automotive lubricating oil according to claim 1, characterized in that, The limiting unit includes a pressure plate (604), a pressure block (605), a limiting block (606), a guide groove (607), and an elastic block (608). The lower pressure plate (604) is fixed to the outer wall of the pressing rod (601), and the lower pressure plate (604) is used to synchronously drive the lower pressure block (605) to move vertically; The lower pressure block (605) is fixed to the bottom of the lower pressure plate (604), and the lower pressure block (605) is used to provide axial movement thrust to the limiting block (606); The limiting block (606) is axially slidably installed on the inner wall of the sealing cover (4) and extends into the interior of the tank (1). The limiting block (606) is used to limit the rotation of the tank (1) and the sealing cover (4). The guide groove (607) is formed on the inner side of the limiting block (606), and the guide groove (607) is used to provide space for the docking of the pressing block (605); The two ends of the elastic block (608) are respectively engaged with the inner wall of the sealing cover (4) and the outer wall of the limiting block (606). The elastic block (608) is used to always apply a squeezing force to the limiting block (606) in one direction.
4. A filtration device for producing automotive lubricating oil according to claim 3, characterized in that, The number of the limiting blocks (606) is set to multiple, and the multiple limiting blocks (606) are distributed in a ring inside the sealing cover (4).
5. A filtration device for producing automotive lubricating oil according to claim 3, characterized in that, The inner wall of the limiting block (606) is provided with a slot for the insertion of the pressing block (605), and the guide groove (607) is provided on both sides of the slot.
6. A filtration device for producing automotive lubricating oil according to claim 3, characterized in that, The outer wall of the pressing block (605) is formed with a cylindrical protrusion that matches the inner side of the guide groove (607), and the outer wall of the guide groove (607) is inclined as a whole.
7. A filtration device for producing automotive lubricating oil according to claim 2, characterized in that, The bottom of the tank (1) is formed with a threaded groove that connects to the threaded protrusion at the bottom of the filter element (5), and the inner wall of the docking sleeve (603) is formed with a sliding groove for the vertical movement of the transmission block (602).